800G OSFP SR8 Specification
NVIDIA twin port transceiver
800G,2xNDR, OSFP, 2xMPO12 APC, 850nm MMF, up to 50m, finned
Functional Blcok Diagram
General Description
OSFP 800G SR8 an Eight-Channel, Parallel, Pluggable, Fiber-Optic OSFP for 800Gigabit Ethernet applications. This transceiver is a high performance module for short-range data communication and interconnect application. It integrates eight data lanes in each direction with 8x53.125GBd. The length of OSFPSR8is up to 60 meters over OM3 MMF or 100 meters over OM4 MMF. This module is designed to operate over multimode fiber systems using a nominal wavelength of 850nm.
Absolute Maximum Ratings and Recommended Operating Conditions
（ Absolute Maximum Ratings）
| Parameter | Symbol | Min | Max | Unit |
| Storage Temperature | Ts | -40 | 85 | °C |
| Case Operating Temperature | Top | 0 | 70 | °C |
| Relative Humidity (non-condensation) | RH | 15 | 85 | % |
| Supply Voltage | Vcc | -0.5 | 3.6 | V |
| Receiver Damage Threshold, per Lane | PRdmg | 5 | | dBm |
（Recommended Operating Conditions）
| Parameter | Symbol | Min | Max | Unit |
| Operating Case Temperature | Top | 0 | 70 | °C |
| Relative Humidity (non-condensing) | RH | 15 | 85 | % |
| Power Supply Voltage | Vcc | 3.135 | 3.465 | V |
| Total Power Consumption | Pc | - | 14 | W |
| Supply Current per end | | | 4.465 | A |
| Bit Rate | BR | | 850 | Gbps |
| Fiber Length on OM3 MMF | | | 60 | m |
| Fiber Length on OM4 MMF | | | 100 | m |
| I2C Clock Frequency | 0 | | 400 | kHz |
Notes:
1.Under condition of 3.465V operating supply voltage, and 70℃case temperature
Optical Specification
Optical Transmitter
（Transmitter Optical Interface）
| Parameter | Symbol | Min | Typical | Max | Unit | |
| Data rate per lane | DR | | 53.125 | | GBd | |
| Modulation format | | PAM4 | | |||
| Center Wavelength1 | λ | 840 | 860 | 868 | nm | |
| RMS spectral width | σ | | | 0.6 | nm | |
| Average Launch power, each lane | Pavg | -4.6 | | 4 | dBm | |
| Optical Power OMA, each Lane，max | POMA | 3.5 | dBm | |||
| OMAouter, each lane min | max (TECQ, TDECQ) <1.8 dB | max [-2.6 , max(TECQ,TECQ) –4.4] | dBm | |||
| 1.8 < max (TECQ, TDECQ) < 4.4 dB | ||||||
| Transmitter and dispersion eye closure (TDECQ), each lane | TDECQ | | | 4.4 | dB | |
| Transmitter eye closure for PAM4 (TECQ), each lane | TECQ | | | 4.4 | dB | |
| Extinction ratio | ER | 2.5 | | | dB | |
| Transmitter power excursion, each lane | | | | 2.3 | dBm | |
| Optical Return Loss Tolerance | ORLT | | | 14 | dB | |
| Optical Power for TX DISABLE | | | | | dBm | |
| Encircled fluxb2 | | ≥86% at 19 um ≤30% at 4.5 um | | |||
| | ||||||
Optical Receiver
(Receiver Optical Interface)
| Parameter | Symbol | Min | Typical | Max | Unit | |
| Data rate per lane | BR | | 53.125 | | Gbd | |
| Modulation format | | PAM4 | | |||
| Center Wavelength1 | λ | 842 | 885 | 948 | nm | |
| Damage threshold | | 5 | | | dBm | |
| Average receive power, each lane | | -6.4 | | 4 | dBm | |
| Receive power, each lane (OMA outer) | | | | | dBm | |
| Receiver reflectance | Rr | | | | dB | |
| Receiver sensitivity, each lane1 | | RS = max (-4.6, TECQ –6.4) | dBm | |||
| Stressed receiver sensitivity, each lane | | | | -2 | dBm | |
| Rx LOS | Assert | | -15 | | | dBm |
| De-assert | | | | -7.5 | dBm | |
| Hysteresis | | 0.5 | | 5 | dB | |
Notes:
1. Receiver sensitivity is informative and is defined for a transmitter with a value of TECQ.Measured with conformance test signal at TP3for BER = 2.4E-4 Pre-FEC.
Electrical Specification
| Parameter | Min | Typical | Max | Unit |
| Pre FEC Bit Error Ratio | | | 2.4E-4 | |
| Post FEC Bit Error Ratio | | | 1E-12 | |
| Transmitter (each Lane) | ||||
| Differential pk-pk Input Voltage tolerance | 750 | | | mV |
| Differential Termination Mismatch | | | 10 | % |
| Eye height | 10 | | | mV |
| Common-mode to differential-mode return loss | IEEE802.3ck Equation (120G–1) | dB | ||
| Vertical eye closure | | | 12 | dB |
| Effective return loss | 7.3 | | | dB |
| Transition Time | 10 | | | ps |
| Receiver (each Lane) | ||||
| Differential data output swing | 300 | | 900 | mVpp |
| Differential termination mismatch | | | 10 | % |
| Eye height | 15 | | | mV |
| Vertical eye closure | | | 12 | dB |
| Common-mode to differential-mode return loss | IEEE802.3ck Equation (120G–1) | |||
| Effective return loss | 8.5 | | | dB |
| Transition time | 8.5 | | | ps |
Mechanical Dimensions
Package dimensions
Package dimensions
Ordering Information
| Part Number | Temperature Range | Distance | Fiber Type | E/O | O/E | Optical Interface |
| R12OSFP-800G-SR8 | 0 to 70℃ | 100m | MMF | VCSEL 850nm | PIN | Dual MPO12 |
| R16OSFP-800G-SR8 | 0 to 70℃ | 100m | MMF | VCSEL 850nm | PIN | MPO16 |
